/* ========================================================
   20261214 AI業務活用セミナー LP スタイルシート
   株式会社アーチ エンジニア事業部
   Look & Feel: ディープネイビー × エネルギッシュオレンジ × 上質ゴールド
   ======================================================== */

:root {
  --primary: #0a192f;
  --primary-light: #172a46;
  --primary-dark: #020c1b;
  --accent-orange: #ff7a00;
  --accent-orange-hover: #e06900;
  --accent-gold: #f59e0b;
  --accent-gold-light: #fef3c7;
  --text-main: #1e293b;
  --text-muted: #64748b;
  --text-light: #f8fafc;
  --bg-main: #ffffff;
  --bg-alt: #f8fafc;
  --bg-warm: #fffbf5;
  --border-light: #e2e8f0;
  --border-orange: #ffedd5;
  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --radius-full: 9999px;
  --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.05);
  --shadow-md: 0 6px 18px rgba(10, 25, 47, 0.08);
  --shadow-lg: 0 15px 30px rgba(10, 25, 47, 0.12);
  --shadow-orange: 0 8px 25px rgba(255, 122, 0, 0.35);
  --transition: all 0.25s cubic-bezier(0.16, 1, 0.3, 1);
}

*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: 'Noto Sans JP', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  color: var(--text-main);
  background-color: var(--bg-main);
  line-height: 1.75;
  word-break: break-word;
  padding-bottom: 70px; /* モバイル固定バー用余白 */
}

@media (min-width: 769px) {
  body {
    padding-bottom: 0;
  }
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

a {
  color: inherit;
  text-decoration: none;
  transition: var(--transition);
}

ul, ol {
  list-style: none;
}

/* ========================================================
   UTILITY & LAYOUT
   ======================================================== */
.container {
  width: 100%;
  max-width: 1140px;
  margin: 0 auto;
  padding: 0 20px;
}

.text-center {
  text-align: center;
}

.font-bold {
  font-weight: 700;
}

.text-orange {
  color: var(--accent-orange);
}

.gradient-orange-text {
  background: linear-gradient(135deg, #ff7a00 0%, #ea580c 50%, #f59e0b 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  display: inline-block;
}

.accent-underline {
  position: relative;
  display: inline-block;
}

.accent-underline::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 100%;
  height: 6px;
  background: linear-gradient(90deg, #ff7a00, #f59e0b);
  border-radius: 3px;
  opacity: 0.85;
}

.section {
  padding: 80px 0;
}

@media (max-width: 768px) {
  .section {
    padding: 50px 0;
  }
}

.section-header {
  margin-bottom: 48px;
}

.section-kicker {
  display: inline-block;
  font-family: 'Outfit', sans-serif;
  font-size: 0.85rem;
  font-weight: 800;
  letter-spacing: 0.12em;
  color: var(--accent-orange);
  background: rgba(255, 122, 0, 0.1);
  padding: 4px 14px;
  border-radius: var(--radius-full);
  margin-bottom: 12px;
}

.section-title {
  font-size: 2.2rem;
  font-weight: 800;
  line-height: 1.35;
  color: var(--primary);
  margin-bottom: 14px;
}

@media (max-width: 768px) {
  .section-title {
    font-size: 1.65rem;
  }
}

.section-subtitle {
  font-size: 1.05rem;
  color: var(--text-muted);
}

/* BUTTONS */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  border-radius: var(--radius-full);
  cursor: pointer;
  border: none;
  outline: none;
  text-align: center;
  transition: var(--transition);
  font-size: 1rem;
}

.btn-sm {
  padding: 8px 18px;
  font-size: 0.88rem;
}

.btn-primary-cta {
  flex-direction: column;
  background: linear-gradient(135deg, #ff7a00 0%, #ea580c 100%);
  color: #ffffff;
  padding: 16px 36px;
  box-shadow: var(--shadow-orange);
  position: relative;
  overflow: hidden;
}

.btn-primary-cta:hover {
  transform: translateY(-3px);
  box-shadow: 0 12px 30px rgba(255, 122, 0, 0.45);
}

@media (max-width: 768px) {
  .btn-primary-cta {
    width: 100%;
    max-width: 100%;
    padding: 12px 14px;
    box-sizing: border-box;
  }

  .cta-badge {
    font-size: 0.72rem;
    padding: 2px 8px;
    margin-bottom: 2px;
  }

  .cta-main-text {
    font-size: 1.05rem;
    line-height: 1.35;
    word-break: break-word;
  }

  .cta-sub-text {
    font-size: 0.75rem;
    line-height: 1.35;
    word-break: break-word;
  }
}

.cta-badge {
  display: inline-block;
  background: rgba(255, 255, 255, 0.25);
  font-size: 0.78rem;
  padding: 2px 10px;
  border-radius: var(--radius-full);
  margin-bottom: 4px;
  letter-spacing: 0.05em;
}

.cta-main-text {
  font-size: 1.25rem;
  font-weight: 800;
  letter-spacing: 0.02em;
}

.cta-sub-text {
  font-size: 0.8rem;
  opacity: 0.92;
  font-weight: 500;
  margin-top: 2px;
}

.btn-secondary-flyer {
  background: #ffffff;
  color: var(--primary);
  border: 2px solid var(--border-light);
  padding: 14px 24px;
  font-size: 0.95rem;
}

.btn-secondary-flyer:hover {
  border-color: var(--accent-orange);
  color: var(--accent-orange);
  background: #fffbf5;
}

.btn-header-cta {
  background: linear-gradient(135deg, #ff7a00, #ea580c);
  color: #fff;
  padding: 8px 20px;
  font-size: 0.88rem;
}

.btn-header-cta:hover {
  opacity: 0.92;
  transform: translateY(-1px);
}

.w-100 {
  width: 100%;
}

/* ========================================================
   TOP ANNOUNCEMENT BAR
   ======================================================== */
.top-announcement-bar {
  background: #0f172a;
  color: #f8fafc;
  font-size: 0.85rem;
  padding: 8px 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.announcement-inner {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  flex-wrap: wrap;
}

.text-mobile {
  display: none;
}

.text-desktop {
  display: inline;
}

.badge-pill {
  background: var(--accent-orange);
  color: #fff;
  font-size: 0.75rem;
  font-weight: 800;
  padding: 2px 8px;
  border-radius: var(--radius-full);
}

.announcement-link {
  color: var(--accent-gold);
  font-weight: 700;
  text-decoration: underline;
}

.announcement-link:hover {
  color: #ffffff;
}

@media (max-width: 768px) {
  .top-announcement-bar {
    padding: 6px 0;
  }

  .announcement-inner {
    font-size: 0.78rem;
    gap: 6px;
    padding: 0 8px;
    justify-content: center;
  }

  .text-desktop {
    display: none;
  }

  .text-mobile {
    display: inline;
  }

  .badge-pill {
    font-size: 0.7rem;
    padding: 2px 6px;
    white-space: nowrap;
    flex-shrink: 0;
  }

  .announcement-link {
    font-size: 0.75rem;
    white-space: nowrap;
  }
}

/* ========================================================
   GLOBAL HEADER
   ======================================================== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border-light);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 68px;
}

.header-logo .logo-corp {
  display: block;
  font-size: 0.75rem;
  color: var(--text-muted);
  font-weight: 500;
}

.header-logo .logo-title {
  font-size: 1.15rem;
  font-weight: 800;
  color: var(--primary);
  letter-spacing: -0.01em;
}

.header-nav {
  display: flex;
  align-items: center;
  gap: 22px;
}

.nav-link {
  font-size: 0.92rem;
  font-weight: 600;
  color: var(--text-main);
  padding: 6px 0;
  position: relative;
}

.nav-link:hover {
  color: var(--accent-orange);
}

.mobile-menu-btn {
  display: none;
  background: transparent;
  border: none;
  cursor: pointer;
  width: 32px;
  height: 32px;
  flex-direction: column;
  justify-content: space-around;
  padding: 4px;
}

.mobile-menu-btn span {
  display: block;
  width: 100%;
  height: 3px;
  background-color: var(--primary);
  border-radius: 2px;
  transition: var(--transition);
}

@media (max-width: 960px) {
  .mobile-menu-btn {
    display: flex;
  }

  .header-nav {
    position: absolute;
    top: 100%;
    left: 0;
    width: 100%;
    background: #ffffff;
    flex-direction: column;
    padding: 24px;
    gap: 16px;
    box-shadow: var(--shadow-lg);
    transform: translateY(-150%);
    transition: transform 0.3s ease;
    border-bottom: 2px solid var(--accent-orange);
    z-index: 99;
  }

  .header-nav.active {
    transform: translateY(0);
  }

  .btn-header-cta {
    width: 100%;
    padding: 12px;
  }
}

/* ========================================================
   SECTION 1: HERO
   ======================================================== */
.hero-section {
  background: radial-gradient(circle at top right, #172a46 0%, #0a192f 100%);
  color: var(--text-light);
  padding: 60px 0 80px;
  position: relative;
  overflow: hidden;
}

.hero-section::before {
  content: '';
  position: absolute;
  top: -50px;
  right: -50px;
  width: 450px;
  height: 450px;
  background: radial-gradient(circle, rgba(255, 122, 0, 0.15) 0%, transparent 70%);
  pointer-events: none;
}

.hero-container {
  max-width: 920px;
  margin: 0 auto;
  text-align: center;
}

.hero-content {
  margin: 0 auto;
}

.target-tag-banner {
  display: inline-flex;
  gap: 8px;
  flex-wrap: wrap;
  margin-bottom: 18px;
}

.target-tag {
  background: var(--accent-orange);
  color: #fff;
  font-size: 0.85rem;
  font-weight: 800;
  padding: 4px 12px;
  border-radius: var(--radius-sm);
}

.event-type-tag {
  background: rgba(255, 255, 255, 0.15);
  color: #ffffff;
  font-size: 0.85rem;
  font-weight: 700;
  padding: 4px 12px;
  border-radius: var(--radius-sm);
  border: 1px solid rgba(255, 255, 255, 0.2);
}

.title-sub-prefix {
  display: block;
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--accent-gold);
  margin-bottom: 10px;
  letter-spacing: 0.04em;
}

.hero-main-title {
  font-size: 2.5rem;
  font-weight: 900;
  line-height: 1.35;
  margin-bottom: 20px;
  letter-spacing: -0.01em;
}

@media (max-width: 768px) {
  .hero-main-title {
    font-size: 1.85rem;
  }
}

.hero-lead-concept {
  font-size: 1.05rem;
  line-height: 1.8;
  color: #cbd5e1;
  margin-bottom: 30px;
}

.hero-highlights-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
  margin-bottom: 32px;
}

@media (max-width: 580px) {
  .hero-highlights-grid {
    grid-template-columns: 1fr;
    text-align: left;
  }
}

.highlight-item {
  background: rgba(255, 255, 255, 0.07);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: var(--radius-md);
  padding: 12px 16px;
  display: flex;
  align-items: center;
  gap: 12px;
}

.highlight-special {
  background: rgba(255, 122, 0, 0.15);
  border-color: rgba(255, 122, 0, 0.4);
}

.h-icon {
  font-size: 1.7rem;
}

.h-text {
  display: flex;
  flex-direction: column;
}

.h-label {
  font-size: 0.72rem;
  color: #94a3b8;
  font-weight: 500;
}

.h-val {
  font-size: 1.02rem;
  font-weight: 800;
  color: #ffffff;
}

.h-sub {
  font-size: 0.75rem;
  color: #cbd5e1;
}

.h-bonus {
  font-size: 0.75rem;
  color: var(--accent-gold);
  font-weight: 700;
}

.cash-tag {
  font-size: 0.78rem;
  font-weight: 500;
  color: #cbd5e1;
}

.hero-cta-area {
  display: flex;
  gap: 16px;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
}

.img-hero-brain {
  width: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}

.hero-image-card:hover .img-hero-brain {
  transform: scale(1.03);
}

.hero-floating-badge {
  position: absolute;
  bottom: 16px;
  left: 16px;
  right: 16px;
  background: rgba(15, 23, 42, 0.92);
  backdrop-filter: blur(8px);
  border: 1px solid rgba(255, 255, 255, 0.15);
  padding: 10px 14px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  gap: 10px;
}

.float-icon {
  font-size: 1.5rem;
}

.float-text strong {
  display: block;
  font-size: 0.88rem;
  color: #ffffff;
}

.float-text span {
  font-size: 0.75rem;
  color: var(--accent-gold);
  font-weight: 600;
}

/* ========================================================
   SECTION 2: EMPATHY / 悩み共感
   ======================================================== */
.empathy-section {
  background: var(--bg-alt);
}

.troubles-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 22px;
  margin-bottom: 40px;
}

.trouble-card {
  background: #ffffff;
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  padding: 28px 22px;
  position: relative;
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
}

.trouble-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  border-color: #cbd5e1;
}

.trouble-badge-num {
  position: absolute;
  top: 16px;
  right: 16px;
  font-family: 'Outfit', sans-serif;
  font-size: 1.3rem;
  font-weight: 800;
  color: #e2e8f0;
}

.trouble-icon {
  font-size: 2.2rem;
  margin-bottom: 14px;
}

.trouble-title {
  font-size: 1.12rem;
  font-weight: 700;
  color: var(--primary);
  line-height: 1.45;
  margin-bottom: 12px;
}

.trouble-desc {
  font-size: 0.92rem;
  color: var(--text-muted);
  line-height: 1.65;
}

.empathy-resolve-banner {
  background: linear-gradient(135deg, #fffbf5 0%, #fff7ed 100%);
  border: 2px dashed #fdba74;
  border-radius: var(--radius-md);
  padding: 24px 30px;
  display: flex;
  align-items: center;
  gap: 20px;
}

@media (max-width: 640px) {
  .empathy-resolve-banner {
    flex-direction: column;
    text-align: center;
  }
}

.resolve-badge {
  background: var(--accent-orange);
  color: #ffffff;
  font-weight: 800;
  font-size: 0.95rem;
  padding: 8px 16px;
  border-radius: var(--radius-full);
  white-space: nowrap;
}

.resolve-text {
  font-size: 1.05rem;
  color: var(--primary);
  line-height: 1.7;
}

/* ========================================================
   SECTION 3: CORE CONCEPT / 栃木の地域アプローチ
   ======================================================== */
.approach-section {
  background: #ffffff;
}

.approach-statement-card {
  background: var(--bg-warm);
  border: 1px solid var(--border-orange);
  border-radius: var(--radius-lg);
  padding: 40px;
}

@media (max-width: 768px) {
  .approach-statement-card {
    padding: 24px;
  }
}

.statement-main {
  text-align: center;
  margin-bottom: 36px;
}

.statement-lead {
  font-size: 1.6rem;
  font-weight: 800;
  color: var(--accent-orange);
  margin-bottom: 10px;
}

.statement-desc {
  font-size: 1.05rem;
  color: var(--text-main);
  max-width: 780px;
  margin: 0 auto;
}

.comparison-grid {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  gap: 20px;
}

@media (max-width: 840px) {
  .comparison-grid {
    grid-template-columns: 1fr;
  }
}

.comparison-card {
  background: #ffffff;
  border-radius: var(--radius-md);
  padding: 28px;
  border: 1px solid var(--border-light);
  box-shadow: var(--shadow-sm);
  height: 100%;
}

.before-card {
  border-left: 5px solid #ef4444;
}

.after-card {
  border-left: 5px solid #10b981;
  background: #f0fdf4;
}

.card-status-badge {
  font-size: 0.85rem;
  font-weight: 800;
  padding: 4px 10px;
  border-radius: var(--radius-sm);
  display: inline-block;
  margin-bottom: 12px;
}

.before-badge {
  background: #fee2e2;
  color: #b91c1c;
}

.after-badge {
  background: #dcfce7;
  color: #15803d;
}

.comparison-card h4 {
  font-size: 1.15rem;
  font-weight: 800;
  color: var(--primary);
  margin-bottom: 16px;
}

.comp-list li {
  position: relative;
  padding-left: 20px;
  margin-bottom: 10px;
  font-size: 0.92rem;
  line-height: 1.6;
}

.before-card .comp-list li::before {
  content: '・';
  position: absolute;
  left: 0;
  color: #ef4444;
  font-weight: 700;
}

.after-card .comp-list li::before {
  content: '✔';
  position: absolute;
  left: 0;
  color: #10b981;
  font-weight: 700;
}

.comp-arrow {
  font-size: 2rem;
  font-weight: 900;
  color: var(--accent-orange);
  text-align: center;
}

@media (max-width: 840px) {
  .comp-arrow {
    transform: rotate(90deg);
    margin: -5px 0;
  }
}

/* ========================================================
   SECTION 4: CURRICULUM / 3大講義テーマ
   ======================================================== */
.curriculum-section {
  background: var(--bg-alt);
}

.curriculum-cards-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 26px;
}

@media (max-width: 960px) {
  .curriculum-cards-grid {
    grid-template-columns: 1fr;
  }
}

.curriculum-card {
  background: #ffffff;
  border: 1px solid var(--border-light);
  border-radius: var(--radius-lg);
  padding: 32px 26px;
  display: flex;
  flex-direction: column;
  box-shadow: var(--shadow-sm);
  position: relative;
  transition: var(--transition);
}

.curriculum-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-lg);
  border-color: var(--accent-orange);
}

.featured-curr-card {
  border: 2px solid var(--accent-orange);
  background: linear-gradient(180deg, #ffffff 0%, #fffbf5 100%);
}

.card-featured-ribbon {
  position: absolute;
  top: 0;
  right: 28px;
  background: var(--accent-orange);
  color: #ffffff;
  font-size: 0.75rem;
  font-weight: 800;
  padding: 4px 12px;
  border-bottom-left-radius: 6px;
  border-bottom-right-radius: 6px;
  letter-spacing: 0.05em;
}

.curr-card-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 16px;
}

.curr-num-tag {
  font-family: 'Outfit', sans-serif;
  font-size: 0.85rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  color: var(--accent-orange);
}

.curr-icon {
  font-size: 2rem;
}

.curr-card-title {
  font-size: 1.25rem;
  font-weight: 800;
  color: var(--primary);
  line-height: 1.4;
  margin-bottom: 12px;
}

.curr-card-lead {
  font-size: 0.92rem;
  color: var(--text-muted);
  line-height: 1.6;
  margin-bottom: 18px;
}

.curr-divider {
  height: 1px;
  background: var(--border-light);
  margin-bottom: 18px;
}

.curr-detail-list {
  margin-top: auto;
}

.curr-detail-list li {
  position: relative;
  padding-left: 18px;
  margin-bottom: 10px;
  font-size: 0.88rem;
  color: var(--text-main);
  line-height: 1.6;
}

.curr-detail-list li::before {
  content: '▸';
  position: absolute;
  left: 0;
  color: var(--accent-orange);
  font-weight: 700;
}

/* ========================================================
   SECTION 5: CASE STUDY / エンジニアーチLab.
   ======================================================== */
.case-section {
  background: #ffffff;
}

.case-card-wrapper {
  background: linear-gradient(135deg, #0a192f 0%, #172a46 100%);
  color: #ffffff;
  border-radius: var(--radius-lg);
  padding: 50px 40px;
  display: grid;
  grid-template-columns: 0.85fr 1.15fr;
  gap: 40px;
  align-items: center;
}

@media (max-width: 860px) {
  .case-card-wrapper {
    grid-template-columns: 1fr;
    padding: 30px 24px;
    text-align: center;
  }
}

.case-visual {
  display: flex;
  flex-direction: column;
  align-items: center;
}

.img-ai-robots {
  max-width: 290px;
  background: #ffffff;
  padding: 14px;
  border-radius: var(--radius-lg);
  border: 1px solid rgba(255, 255, 255, 0.2);
  box-shadow: 0 12px 30px rgba(0, 0, 0, 0.35);
}

.case-tag-bottom {
  margin-top: 14px;
  font-size: 0.82rem;
  color: var(--accent-gold);
  font-weight: 700;
  letter-spacing: 0.05em;
}

.case-kicker {
  font-family: 'Outfit', sans-serif;
  font-size: 0.85rem;
  font-weight: 800;
  letter-spacing: 0.1em;
  color: var(--accent-orange);
  margin-bottom: 8px;
}

.case-title {
  font-size: 1.75rem;
  font-weight: 800;
  line-height: 1.4;
  margin-bottom: 20px;
}

@media (max-width: 768px) {
  .case-title {
    font-size: 1.45rem;
  }
}

.case-lead {
  font-size: 1rem;
  line-height: 1.8;
  color: #cbd5e1;
  margin-bottom: 22px;
}

.case-structure-box {
  background: rgba(255, 255, 255, 0.07);
  border-left: 4px solid var(--accent-orange);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  padding: 16px 20px;
  margin-bottom: 20px;
  text-align: left;
}

.structure-badge {
  font-size: 0.75rem;
  color: var(--accent-orange);
  font-weight: 800;
  margin-bottom: 4px;
}

.structure-text {
  font-size: 0.95rem;
  line-height: 1.7;
}

.case-message {
  font-size: 0.92rem;
  color: #94a3b8;
  line-height: 1.7;
}

/* ========================================================
   SECTION 6: SCHEDULE / タイムスケジュール
   ======================================================== */
.schedule-section {
  background: var(--bg-alt);
}

.timeline-container {
  max-width: 720px;
  margin: 0 auto;
  position: relative;
  padding-left: 30px;
}

.timeline-container::before {
  content: '';
  position: absolute;
  top: 10px;
  bottom: 10px;
  left: 10px;
  width: 3px;
  background: var(--border-light);
}

.timeline-item {
  position: relative;
  margin-bottom: 28px;
}

.timeline-marker {
  position: absolute;
  top: 6px;
  left: -26px;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: #ffffff;
  border: 3px solid var(--text-muted);
}

.timeline-featured .timeline-marker {
  border-color: var(--accent-orange);
  background: var(--accent-orange);
  box-shadow: 0 0 0 4px rgba(255, 122, 0, 0.2);
}

.timeline-break .timeline-marker {
  border-color: #94a3b8;
  background: #e2e8f0;
}

.timeline-time {
  font-family: 'Outfit', sans-serif;
  font-weight: 700;
  font-size: 0.95rem;
  color: var(--accent-orange);
  margin-bottom: 4px;
}

.timeline-content {
  background: #ffffff;
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  padding: 18px 22px;
  box-shadow: var(--shadow-sm);
}

.timeline-featured .timeline-content {
  border-left: 4px solid var(--accent-orange);
}

.part-badge {
  display: inline-block;
  background: var(--accent-orange);
  color: #ffffff;
  font-size: 0.72rem;
  font-weight: 800;
  padding: 2px 8px;
  border-radius: var(--radius-sm);
  margin-bottom: 6px;
}

.optional-badge {
  background: #64748b;
}

.timeline-content h4 {
  font-size: 1.15rem;
  font-weight: 800;
  color: var(--primary);
  margin-bottom: 8px;
}

.timeline-content p {
  font-size: 0.92rem;
  color: var(--text-muted);
  line-height: 1.6;
}

/* ========================================================
   SECTION 7: SPECIAL OFFER / グループ申込
   ======================================================== */
.offer-section {
  background: #ffffff;
}

.offer-box {
  background: radial-gradient(circle at center, #172a46 0%, #0a192f 100%);
  color: #ffffff;
  border-radius: var(--radius-lg);
  padding: 50px 40px;
  text-align: center;
  position: relative;
  overflow: hidden;
  border: 2px solid rgba(245, 158, 11, 0.4);
}

@media (max-width: 768px) {
  .offer-box {
    padding: 36px 20px;
  }
}

.offer-tag-badge {
  display: inline-block;
  background: var(--accent-gold);
  color: var(--primary);
  font-size: 0.85rem;
  font-weight: 800;
  padding: 6px 16px;
  border-radius: var(--radius-full);
  margin-bottom: 16px;
}

.offer-title {
  font-size: 2.1rem;
  font-weight: 900;
  line-height: 1.35;
  margin-bottom: 18px;
}

@media (max-width: 768px) {
  .offer-title {
    font-size: 1.6rem;
  }
}

.highlight-yellow {
  color: #fde047;
}

.offer-lead {
  font-size: 1.05rem;
  color: #cbd5e1;
  max-width: 720px;
  margin: 0 auto 36px;
  line-height: 1.75;
}

.offer-features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  margin-bottom: 36px;
}

@media (max-width: 840px) {
  .offer-features-grid {
    grid-template-columns: 1fr;
  }
}

.offer-feat-card {
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.15);
  border-radius: var(--radius-md);
  padding: 24px 20px;
  text-align: center;
}

.of-icon {
  font-size: 2.2rem;
  margin-bottom: 12px;
}

.offer-feat-card h4 {
  font-size: 1.1rem;
  font-weight: 800;
  color: #ffffff;
  margin-bottom: 10px;
}

.offer-feat-card p {
  font-size: 0.88rem;
  color: #cbd5e1;
  line-height: 1.65;
}

.offer-cta-hint {
  font-size: 0.85rem;
  color: #94a3b8;
  margin-bottom: 16px;
}

/* ========================================================
   SECTION 8: SPEAKER / 講師紹介
   ======================================================== */
.speaker-section {
  background: var(--bg-alt);
}

.speaker-card {
  background: #ffffff;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-light);
  box-shadow: var(--shadow-md);
  padding: 40px;
  display: grid;
  grid-template-columns: 300px 1fr;
  gap: 40px;
  align-items: center;
}

@media (max-width: 860px) {
  .speaker-card {
    grid-template-columns: 1fr;
    text-align: center;
    padding: 28px 20px;
  }
}

.speaker-photo-wrap {
  text-align: center;
}

.speaker-photo {
  width: 240px;
  height: 240px;
  border-radius: 50%;
  object-fit: cover;
  object-position: center 6%;
  margin: 0 auto 16px;
  border: 4px solid #ffffff;
  box-shadow: var(--shadow-md);
}

.speaker-affiliation strong {
  display: block;
  font-size: 1.4rem;
  font-weight: 800;
  color: var(--primary);
}

.speaker-affiliation span {
  font-size: 0.85rem;
  color: var(--text-muted);
}

.speaker-catch {
  font-size: 1.35rem;
  font-weight: 800;
  color: var(--accent-orange);
  line-height: 1.45;
  margin-bottom: 18px;
}

.speaker-bio-text {
  font-size: 0.95rem;
  color: var(--text-main);
  line-height: 1.8;
  margin-bottom: 14px;
}

.speaker-badges-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 20px;
}

@media (max-width: 860px) {
  .speaker-badges-row {
    justify-content: center;
  }
}

.sp-badge {
  background: var(--bg-alt);
  color: var(--primary);
  border: 1px solid var(--border-light);
  font-size: 0.8rem;
  font-weight: 700;
  padding: 4px 12px;
  border-radius: var(--radius-full);
}

/* ========================================================
   SECTION 9: OVERVIEW / 開催要項・会場案内
   ======================================================== */
.overview-section {
  background: #ffffff;
}

.overview-grid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 36px;
}

@media (max-width: 860px) {
  .overview-grid {
    grid-template-columns: 1fr;
  }
}

.overview-table-wrap {
  background: #ffffff;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-light);
  overflow: hidden;
}

.overview-table {
  width: 100%;
  border-collapse: collapse;
}

.overview-table th, .overview-table td {
  padding: 16px 20px;
  font-size: 0.92rem;
  line-height: 1.6;
  border-bottom: 1px solid var(--border-light);
}

.overview-table tr:last-child th,
.overview-table tr:last-child td {
  border-bottom: none;
}

.overview-table th {
  width: 28%;
  background: var(--bg-alt);
  color: var(--primary);
  font-weight: 700;
  vertical-align: top;
  text-align: left;
}

.map-card {
  background: #ffffff;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-light);
  padding: 20px;
  box-shadow: var(--shadow-sm);
}

.map-header {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 14px;
  font-size: 1rem;
  color: var(--primary);
}

.map-embed {
  border-radius: var(--radius-sm);
  overflow: hidden;
  margin-bottom: 14px;
}

.map-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 10px;
}

.venue-map-link {
  font-size: 0.85rem;
  color: var(--accent-orange);
  text-decoration: underline;
  margin-left: 6px;
  font-weight: 600;
}

.venue-map-link:hover {
  color: #ea580c;
}

.btn-map-link {
  background: var(--primary);
  color: #fff;
}

.btn-map-link:hover {
  background: var(--primary-light);
}

.map-hint {
  font-size: 0.8rem;
  color: var(--text-muted);
}

/* ========================================================
   SECTION 10: FAQ / よくある質問
   ======================================================== */
.faq-section {
  background: var(--bg-alt);
}

.faq-accordion {
  max-width: 780px;
  margin: 0 auto;
}

.faq-item {
  background: #ffffff;
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  margin-bottom: 14px;
  overflow: hidden;
  transition: var(--transition);
}

.faq-question {
  width: 100%;
  display: flex;
  align-items: center;
  padding: 18px 22px;
  background: transparent;
  border: none;
  cursor: pointer;
  text-align: left;
  gap: 14px;
}

.q-icon {
  background: var(--accent-orange);
  color: #ffffff;
  font-family: 'Outfit', sans-serif;
  font-weight: 900;
  font-size: 0.95rem;
  width: 30px;
  height: 30px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  flex-shrink: 0;
}

.q-text {
  font-size: 1.02rem;
  font-weight: 700;
  color: var(--primary);
  flex-grow: 1;
}

.faq-toggle-icon {
  font-size: 1.4rem;
  color: var(--text-muted);
  font-weight: 700;
  transition: transform 0.25s ease;
}

.faq-item.active .faq-toggle-icon {
  transform: rotate(45deg);
  color: var(--accent-orange);
}

.faq-answer {
  display: none;
  padding: 0 22px 20px 66px;
  font-size: 0.94rem;
  color: var(--text-main);
  line-height: 1.75;
  border-top: 1px solid transparent;
}

.faq-item.active .faq-answer {
  display: block;
}

@media (max-width: 580px) {
  .faq-answer {
    padding-left: 22px;
  }
}

/* ========================================================
   SECTION 11: APPLICATION FORM / 参加申込フォーム
   ======================================================== */
.apply-section {
  background: radial-gradient(circle at top, #172a46 0%, #0a192f 100%);
  color: #ffffff;
}

.apply-card {
  width: 100%;
  max-width: 100%;
  margin: 0 auto;
  background: #ffffff;
  color: var(--text-main);
  border-radius: var(--radius-lg);
  padding: 48px;
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.4);
}

@media (max-width: 768px) {
  .apply-card {
    padding: 28px 20px;
  }
}

.apply-kicker {
  font-family: 'Outfit', sans-serif;
  font-size: 0.85rem;
  font-weight: 800;
  letter-spacing: 0.1em;
  color: var(--accent-orange);
  margin-bottom: 6px;
  display: inline-block;
}

.apply-title {
  font-size: 2rem;
  font-weight: 800;
  color: var(--primary);
  margin-bottom: 10px;
}

@media (max-width: 768px) {
  .apply-title {
    font-size: 1.55rem;
  }
}

.apply-lead {
  font-size: 0.95rem;
  color: var(--text-muted);
  margin-bottom: 20px;
}

.apply-summary-badge {
  background: var(--bg-warm);
  border: 1px solid var(--border-orange);
  padding: 12px 18px;
  border-radius: var(--radius-md);
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  justify-content: center;
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--primary);
  margin-bottom: 30px;
}

.badge-free-companion {
  color: var(--accent-orange);
}

.form-group {
  margin-bottom: 22px;
}

.form-row-2 {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 18px;
}

@media (max-width: 640px) {
  .form-row-2 {
    grid-template-columns: 1fr;
    gap: 0;
  }
}

.form-label {
  display: block;
  font-size: 0.92rem;
  font-weight: 700;
  color: var(--primary);
  margin-bottom: 8px;
}

.req-tag {
  background: #ef4444;
  color: #fff;
  font-size: 0.7rem;
  padding: 2px 6px;
  border-radius: 4px;
  margin-left: 6px;
}

.opt-tag {
  background: #94a3b8;
  color: #fff;
  font-size: 0.7rem;
  padding: 2px 6px;
  border-radius: 4px;
  margin-left: 6px;
}

.form-input, .form-textarea {
  width: 100%;
  padding: 12px 16px;
  font-size: 1rem;
  border: 1.5px solid var(--border-light);
  border-radius: var(--radius-sm);
  background: #ffffff;
  color: var(--text-main);
  transition: var(--transition);
  font-family: inherit;
}

.form-input:focus, .form-textarea:focus {
  outline: none;
  border-color: var(--accent-orange);
  box-shadow: 0 0 0 3px rgba(255, 122, 0, 0.15);
}

.form-hint {
  display: block;
  font-size: 0.78rem;
  color: var(--text-muted);
  margin-top: 4px;
}

.highlight-form-group {
  background: #fffbf5;
  border: 1.5px solid var(--border-orange);
  border-radius: var(--radius-md);
  padding: 18px;
}

.attendee-count-radios {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.radio-label {
  display: flex;
  align-items: center;
  gap: 10px;
  cursor: pointer;
  font-size: 0.95rem;
  font-weight: 600;
}

.radio-label input[type="radio"] {
  accent-color: var(--accent-orange);
  width: 18px;
  height: 18px;
}

.companion-fields {
  margin-top: 14px;
  padding-top: 14px;
  border-top: 1px dashed var(--border-light);
}

.companion-fields.hidden,
.companion-field-1.hidden,
.companion-field-2.hidden {
  display: none;
}

.privacy-consent-box {
  margin: 24px 0;
  padding: 14px;
  background: var(--bg-alt);
  border-radius: var(--radius-sm);
}

.checkbox-label {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  cursor: pointer;
  font-size: 0.85rem;
  color: var(--text-main);
  line-height: 1.6;
}

.checkbox-label input[type="checkbox"] {
  accent-color: var(--accent-orange);
  width: 18px;
  height: 18px;
  margin-top: 3px;
  flex-shrink: 0;
}

.checkbox-label a {
  color: var(--accent-orange);
  text-decoration: underline;
  font-weight: 700;
}

.btn-submit-cta {
  background: linear-gradient(135deg, #ff7a00 0%, #ea580c 100%);
  color: #ffffff;
  padding: 18px 48px;
  border-radius: var(--radius-full);
  display: inline-flex;
  flex-direction: column;
  box-shadow: var(--shadow-orange);
  cursor: pointer;
  border: none;
}

.btn-submit-cta:hover {
  transform: translateY(-3px);
  box-shadow: 0 12px 30px rgba(255, 122, 0, 0.45);
}

.submit-btn-title {
  font-size: 1.25rem;
  font-weight: 800;
}

.submit-btn-sub {
  font-size: 0.8rem;
  opacity: 0.92;
  margin-top: 4px;
}

/* ========================================================
   GLOBAL FOOTER
   ======================================================== */
.site-footer {
  background: #020c1b;
  color: #94a3b8;
  padding: 50px 0 20px;
  font-size: 0.88rem;
}

.footer-inner {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 30px;
  padding-bottom: 30px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  flex-wrap: wrap;
}

.footer-corp-name {
  font-size: 1.1rem;
  font-weight: 800;
  color: #ffffff;
  margin-bottom: 8px;
}

.footer-address, .footer-contact {
  line-height: 1.7;
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 18px;
}

.footer-links a:hover {
  color: var(--accent-orange);
}

.footer-bottom {
  padding-top: 24px;
  font-size: 0.8rem;
  color: #64748b;
}

/* ========================================================
   MODALS (POPUP)
   ======================================================== */
.modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(10, 25, 47, 0.8);
  backdrop-filter: blur(5px);
  z-index: 999;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
  transition: opacity 0.25s ease;
}

.modal-overlay.hidden {
  display: none;
}

.modal-card {
  background: #ffffff;
  color: var(--text-main);
  border-radius: var(--radius-lg);
  max-width: 900px;
  width: 100%;
  max-height: 90vh;
  display: flex;
  flex-direction: column;
  box-shadow: 0 25px 60px rgba(0, 0, 0, 0.4);
  overflow: hidden;
  animation: modalIn 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

@keyframes modalIn {
  from { transform: scale(0.95); opacity: 0; }
  to { transform: scale(1); opacity: 1; }
}

.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 24px;
  border-bottom: 1px solid var(--border-light);
  background: var(--bg-alt);
}

.modal-header h3 {
  font-size: 1.15rem;
  font-weight: 800;
  color: var(--primary);
}

.modal-close-btn {
  background: transparent;
  border: none;
  font-size: 1.8rem;
  cursor: pointer;
  color: var(--text-muted);
  line-height: 1;
}

.modal-close-btn:hover {
  color: var(--accent-orange);
}

.modal-body {
  padding: 24px;
  overflow-y: auto;
}

.modal-footer {
  padding: 16px 24px;
  border-top: 1px solid var(--border-light);
  background: var(--bg-alt);
  display: flex;
  justify-content: flex-end;
}

.flyer-pages-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}

@media (max-width: 768px) {
  .flyer-pages-grid {
    grid-template-columns: 1fr;
  }
}

.flyer-page-wrap {
  text-align: center;
}

.page-title {
  display: block;
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--primary);
  margin-bottom: 8px;
}

.img-flyer-preview {
  width: 100%;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-light);
  box-shadow: var(--shadow-sm);
}

/* 完了モーダル */
.complete-modal-card {
  max-width: 520px;
  text-align: center;
  padding: 36px 30px;
}

.complete-icon {
  font-size: 3.5rem;
  margin-bottom: 16px;
}

.complete-title {
  font-size: 1.55rem;
  font-weight: 800;
  color: var(--primary);
  margin-bottom: 12px;
}

.complete-desc {
  font-size: 0.95rem;
  color: var(--text-muted);
  line-height: 1.7;
  margin-bottom: 24px;
}

.complete-summary {
  background: var(--bg-warm);
  border: 1px solid var(--border-orange);
  border-radius: var(--radius-md);
  padding: 16px;
  font-size: 0.88rem;
  text-align: left;
  margin-bottom: 24px;
}

/* プライバシーモーダル */
.privacy-modal-body h4 {
  font-size: 1.05rem;
  font-weight: 800;
  color: var(--primary);
  margin: 18px 0 8px;
}

.privacy-modal-body h4:first-child {
  margin-top: 0;
}

.privacy-modal-body p {
  font-size: 0.9rem;
  line-height: 1.7;
  color: var(--text-main);
  margin-bottom: 10px;
}

.privacy-modal-body ul {
  font-size: 0.88rem;
  line-height: 1.7;
  margin-bottom: 14px;
}

.privacy-modal-body li {
  position: relative;
  padding-left: 18px;
  margin-bottom: 6px;
}

.privacy-modal-body li::before {
  content: '・';
  position: absolute;
  left: 0;
  color: var(--accent-orange);
  font-weight: 700;
}

/* ========================================================
   MOBILE STICKY BOTTOM CTA
   ======================================================== */
.mobile-sticky-cta {
  display: none;
  position: fixed;
  bottom: 0;
  left: 0;
  width: 100%;
  background: rgba(10, 25, 47, 0.95);
  backdrop-filter: blur(8px);
  border-top: 1px solid rgba(255, 255, 255, 0.15);
  padding: 10px 16px;
  z-index: 90;
  align-items: center;
  justify-content: space-between;
  box-shadow: 0 -4px 15px rgba(0, 0, 0, 0.2);
}

@media (max-width: 768px) {
  .mobile-sticky-cta {
    display: flex;
  }
}

.sticky-cta-info {
  display: flex;
  flex-direction: column;
}

.sticky-badge {
  font-size: 0.68rem;
  color: var(--accent-gold);
  font-weight: 700;
}

.sticky-price {
  font-size: 1.05rem;
  color: #ffffff;
  font-weight: 800;
}

.sticky-price small {
  font-size: 0.72rem;
  font-weight: 500;
  color: #cbd5e1;
}

.btn-sticky-apply {
  background: linear-gradient(135deg, #ff7a00, #ea580c);
  color: #ffffff;
  font-size: 0.92rem;
  font-weight: 800;
  padding: 10px 22px;
  border-radius: var(--radius-full);
  box-shadow: var(--shadow-orange);
}